Writing Practice: Lost Bag Inquiry Email

Stylistically you don’t capitalise every word in the title.

Dear mManager, ¶
I hope this email finds you well.

I'm a customer who dined at your restaurant with my friends yesterday. (Add the date)

WThe four of us were sitting near the window by the entrance and left around 7:00 PM.

It contains important stuffthings like my driver's license, house keys and amy wallet with a credit card and cash inside.

I assumed I possirobably left it in your restaurant.

If you have found it, could you please call me aturgently on 123456 or reply this email.

I would really appreciate your help. I look forward to hearing from you.

Dear m[Insert Name of Restaurant] Manager, ¶
I hope this email finds you well.

Alternative: Manager of [Name of Restaurant] or if you happen to know the name of the manager you may also use Mr./Ms./Mrs. [Name]

We four werewere a party of four sitting near the window by the entrance and left around 7:00 PM.

"We four" is gramatically correct, but "a party of four" is a more apt description.

It contains important stuff like my driver's license, house keys, and amy wallet with my credit card and cash inside.

It's implied that since the wallet is in your bag it belongs to you.

I assumed I that I have possibly left it inat your restaurant.

It is a black leather handbag with a teddy bear keychain attached [to it].

If you have foufind it, could you please call me at 123456 or reply to this email.

Best regards, ¶
Tina Chen ¶
(Could you please help me refine it to make it natural and appropriate, as well as expand the vocabulary range?)